Electrophotography – Image formation – Development
Patent
1996-06-06
1998-04-07
Beatty, Robert
Electrophotography
Image formation
Development
G03G 1508
Patent
active
057376760
ABSTRACT:
A latent electrostatic image developing device for use in developing a latent electrostatic image to a toner image in an image forming machine. The device includes a developing roller within a development housing for holding a developer on its surface in a developer holding zone and conveying the developer, which is held to a developing zone, in order to apply it to a latent electrostatic image. A restricting portion has a blade which includes a rigid part for acting on the surface of the developing roller in a developer restricting zone located between the developer holding zone and the developing zone in order to restrict the amount of the developer held on the surface. The blade is caused to protrude to the upstream side as viewed in the direction of movement of the developing roller, and that border of its protrusion facing the developing roller is provided with a C 0.1 to 0.6 mm chamfer (C being the JIS designation for a 45 degree chamfer).
REFERENCES:
patent: 4920916 (1990-05-01), Mizuno et al.
patent: 5220129 (1993-06-01), Nishio et al.
patent: 5338895 (1994-08-01), Ikegawa et al.
patent: 5552867 (1996-09-01), Sekino et al.
Japanese Patent Abstract, Umeno et al., 07-036277, Feb. 1995.
Kitajima Ken-ichiro
Maeda Masahiko
Nakashima Masayuki
Tomita Shoji
Uyama Masao
Beatty Robert
Mita Industrial
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